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Potterton Wiring Harness 5117673

Potterton

Potterton Wiring Harness 5117673

Potterton wiring harness 5117673 for the limit thermostat, flue thermostat and fan circuit.

At a glance

  • Also known as 1118529
Manufacturer part no.
5117673
Showing prices

£42.00

£35.00 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Potterton 5117673 wiring harness is a pre-formed electrical loom that connects the limit thermostat, flue thermostat and fan within the appliance. It is supplied by Potterton for use across the Promax boiler and Promax Store cylinder ranges. The harness carries the control and safety signals between these components and the boiler's main wiring.

Signs this part needs replacing

  • The fan fails to run or runs intermittently with no obvious mechanical fault
  • Limit thermostat or flue thermostat faults recur after the sensors themselves have been checked
  • Overheat lockouts or flue-related fault codes appear on the boiler display
  • Visible damage to the loom: chafed insulation, scorched or brittle wiring, or exposed conductors
  • Loose, corroded or heat-damaged connector terminals at the thermostat or fan plugs

Before you order

  • Confirm the appliance model and, where applicable, the serial number suffix against the fitment list
  • Check the existing harness for the number of plugs and connector types before ordering
  • Inspect the fan and both thermostats first, as a fault code may point to a failed component rather than the loom
  • Isolate the electrical supply and follow the manufacturer's wiring diagram when fitting

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.